Add back always on option

ApplicationLibrary/Views/Abstract/Binding+Unwrap.swift

@@ -12,7 +12,7 @@ public extension Binding {
 
 public extension Binding where Value == Int32 {
     func stringBinding(defaultValue: Int32) -> Binding<String> {
-        return Binding<String> {
+        Binding<String> {
             var intValue = wrappedValue
             if intValue == 0 {
                 intValue = defaultValue

ApplicationLibrary/Views/Abstract/ShareButton.swift

@@ -21,9 +21,9 @@ public struct ProfileShareButton<Label>: View where Label: View {
 
     public var body: some View {
         #if os(iOS)
-        if #available(iOS 17.4, *) {
-            bodyCompat
-        } else if #available(iOS 16.0, *) {
+            if #available(iOS 17.4, *) {
+                bodyCompat
+            } else if #available(iOS 16.0, *) {
                 ShareLink(item: profile, subject: Text(profile.name), preview: SharePreview("Share profile"), label: label)
             } else if UIDevice.current.userInterfaceIdiom != .pad {
                 bodyCompat

ApplicationLibrary/Views/Setting/OnDemandRulesView.swift

@@ -0,0 +1,57 @@
+import Foundation
+import Library
+import SwiftUI
+
+public struct OnDemandRulesView: View {
+    @State private var isLoading = true
+    @State private var alwaysOn = false
+
+    public init() {}
+    public var body: some View {
+        viewBuilder {
+            if isLoading {
+                ProgressView().onAppear {
+                    Task.detached {
+                        await loadSettings()
+                    }
+                }
+            } else {
+                FormView {
+                    FormSection {
+                        Toggle("Always On", isOn: $alwaysOn)
+                            .onChangeCompat(of: alwaysOn) { newValue in
+                                Task {
+                                    await SharedPreferences.alwaysOn.set(newValue)
+                                }
+                            }
+                    } footer: {
+                        Text("""
+                        Implement always-on via on-demand rules.
+
+                        This should not be an intended use of the API, so you cannot disable VPN in system settings. To stop the service manually, use the in-app interface or simply delete the VPN profile.
+                        """)
+                    }
+
+                    FormButton {
+                        Task {
+                            await SharedPreferences.resetOnDemandRules()
+                            isLoading = true
+                        }
+                    } label: {
+                        Label("Reset", systemImage: "eraser.fill")
+                    }
+                    .foregroundColor(.red)
+                }
+            }
+        }
+        .navigationTitle("On Demand Rules")
+        #if os(iOS)
+            .navigationBarTitleDisplayMode(.inline)
+        #endif
+    }
+
+    private func loadSettings() async {
+        alwaysOn = await SharedPreferences.alwaysOn.get()
+        isLoading = false
+    }
+}

ApplicationLibrary/Views/Setting/PacketTunnelView.swift

@@ -2,10 +2,6 @@ import Library
 import SwiftUI
 
 struct PacketTunnelView: View {
-    #if os(macOS)
-        public static let windowID = "packet-tunnel"
-    #endif
-
     @State private var isLoading = true
 
     @State private var ignoreMemoryLimit = false

ApplicationLibrary/Views/Setting/SettingView.swift

@@ -12,7 +12,7 @@ public struct SettingView: View {
             case app
         #endif
 
-        case core, packetTunnel, profileOverride, sponsors
+        case core, packetTunnel, onDemandRules, profileOverride, sponsors
 
         var label: some View {
             Label(title, systemImage: iconImage)
@@ -28,6 +28,8 @@ public struct SettingView: View {
                 return NSLocalizedString("Core", comment: "")
             case .packetTunnel:
                 return NSLocalizedString("Packet Tunnel", comment: "")
+            case .onDemandRules:
+                return NSLocalizedString("On Demand Rules", comment: "")
             case .profileOverride:
                 return NSLocalizedString("Profile Override", comment: "")
             case .sponsors:
@@ -45,6 +47,8 @@ public struct SettingView: View {
                 return "shippingbox.fill"
             case .packetTunnel:
                 return "aspectratio.fill"
+            case .onDemandRules:
+                return "filemenu.and.selection"
             case .profileOverride:
                 return "square.dashed.inset.filled"
             case .sponsors:
@@ -64,6 +68,8 @@ public struct SettingView: View {
                     CoreView()
                 case .packetTunnel:
                     PacketTunnelView()
+                case .onDemandRules:
+                    OnDemandRulesView()
                 case .profileOverride:
                     ProfileOverrideView()
                 case .sponsors:
@@ -95,7 +101,7 @@ public struct SettingView: View {
             #if os(macOS)
                 Tabs.app.navigationLink
             #endif
-            ForEach([Tabs.core, Tabs.packetTunnel, Tabs.profileOverride]) { it in
+            ForEach([Tabs.core, Tabs.packetTunnel, Tabs.onDemandRules, Tabs.profileOverride]) { it in
                 it.navigationLink
             }
             #if !os(tvOS)